Bug 1618532 - Re-enable mouse event retargeting on Android. r=snorp

Differential Revision: https://phabricator.services.mozilla.com/D64601

--HG--
extra : moz-landing-system : lando

mobile/android/app/mobile.js

@@ -357,7 +357,7 @@ pref("ui.touch.radius.rightmm", 3);
 pref("ui.touch.radius.bottommm", 2);
 pref("ui.touch.radius.visitedWeight", 120);
 
-pref("ui.mouse.radius.enabled", false);
+pref("ui.mouse.radius.enabled", true);
 pref("ui.mouse.radius.leftmm", 3);
 pref("ui.mouse.radius.topmm", 5);
 pref("ui.mouse.radius.rightmm", 3);